Presenter:

Gordon Blackman(Louisiana Tech University)

Authors:

Gordon Blackman(Louisiana Tech University)

Dentcho Genov(Louisiana Tech University)

Quantum size effects on the permittivity of metal nanoparticles are investigated using the quantum box model. Explicit upper and lower bounds are derived for the permittivity and relaxation rates due to quantum confinement effects. These bounds are verified numerically, and the size-dependence and frequency-dependence of the empirical Drude size parameter is extracted from the model. Results suggest that the common practice of empirically modifying the dielectric function can lead to inaccurate predictions for highly uniform distributions of finite-sized particles.

*This work was supported by the NSF EPSCoR CIMM project under award #OIA-1541079 and the Louisiana Board of Regents.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.H18.10